Uses
Toxic parts
Edible uses
Notes
Unknown part
Seed
Material uses
The needles contain a substance called terpene, this is released when rain washes over the needles and it has a negative effect on the germination of some plants, including wheat[4].
Oleo-resins are present in the tissues of all species of pines, but these are often not present in sufficient quantity to make their extraction economically worthwhile[5]. The resins are obtained by tapping the trunk, or by destructive distillation of the wood[6][5]. In general, trees from warmer areas of distribution give the higher yields[5]. Turpentine consists of an average of 20% of the oleo-resin[5] and is separated by distillation[6][5]. Turpentine has a wide range of uses including as a solvent for waxes etc, for making varnish, medicinal etc[6]. Rosin is the substance left after turpentine is removed. This is used by violinists on their bows and also in making sealing wax, varnish etc[6]. Pitch can also be obtained from the resin and is used for waterproofing, as a wood preservative etc.Medicinal uses(Warning!)
Ecology
Ecosystem niche/layer
Ecological Functions
Nothing listed.
Forage
Nothing listed.
Shelter
Nothing listed.
Propagation
Practical Plants is currently lacking information on propagation instructions of Pinus johannis. Help us fill in the blanks! Edit this page to add your knowledge.
Cultivation
This species is not hardy in the colder areas of the country, it tolerates temperatures down to between -5 and -10°c[2]. Plants are often no more than multi-stemmed shrubs[2]. This species is very closely related to P. discolor and perhaps not distinct from it[2]. The cones open and shed their seed whilst still attached to the tree[11]. Plants are strongly outbreeding, self-fertilized seed usually grows poorly[2]. They hybridize freely with other members of this genus[2] and sometimes self-sow in British gardens[12]. Leaf secretions inhibit the germination of seeds, thereby reducing the amount of plants that can grow under the trees[13].
Plants in this genus are notably susceptible to honey fungus[2].Crops
Problems, pests & diseases
Associations & Interactions
There are no interactions listed for Pinus johannis. Do you know of an interaction that should be listed here? edit this page to add it.
Polycultures & Guilds
There are no polycultures listed which include Pinus johannis.
Descendants
Cultivars
Varieties
None listed.
Subspecies
None listed.
Full Data
This table shows all the data stored for this plant.
- Drought
References
- ? Foster. S. & Duke. J. A. A Field Guide to Medicinal Plants. Eastern and Central N. America. Houghton Mifflin Co. ISBN 0395467225 (1990-00-00)
- ? 2.002.012.022.032.042.052.062.072.082.092.102.112.122.13 Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press ISBN 0-333-47494-5 (1992-00-00)
- ? 3.03.1 Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. ISBN 0-02-544950-8 (1974-00-00)
- ? 4.04.1 Allardice.P. A - Z of Companion Planting. Cassell Publishers Ltd. ISBN 0-304-34324-2 (1993-00-00)
- ? 5.05.15.25.35.45.5 Howes. F. N. Vegetable Gums and Resins. Faber ()
- ? 6.06.16.26.36.46.56.66.76.86.9 Grieve. A Modern Herbal. Penguin ISBN 0-14-046-440-9 (1984-00-00)
- ? McMillan-Browse. P. Hardy Woody Plants from Seed. Grower Books ISBN 0-901361-21-6 (1985-00-00)
- ? 8.08.1 Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray (1981-00-00)
- ? Rushforth. K. Conifers. Christopher Helm ISBN 0-7470-2801-X (1987-00-00)
- ? 10.010.1 F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press (1951-00-00)
- ? Lauriault. J. Identification Guide to the Trees of Canada Fitzhenry and Whiteside, Ontario. ISBN 0889025649 (1989-00-00)
- ? Mitchell. A. F. Conifers in the British Isles. HMSO ISBN 0-11-710012-9 (1975-00-00)
- ? Philbrick H. and Gregg R. B. Companion Plants. Watkins (1979-00-00)
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